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linux-headers: Update to v6.2-rc8

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Update to commit ceaa837f96ad ("Linux 6.2-rc8").

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Link: https://lore.kernel.org/r/20230216143630.25610-2-avihaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Avihai Horon 2023-02-16 16:36:20 +02:00 committed by Alex Williamson
parent 6dffbe36af
commit 93d7620c25
13 changed files with 231 additions and 40 deletions
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29
include/standard-headers/drm/drm_fourcc.h
View File

@ -743,6 +743,35 @@ extern "C" {
*/
#define DRM_FORMAT_MOD_VIVANTE_SPLIT_SUPER_TILED fourcc_mod_code(VIVANTE, 4)
/*
* Vivante TS (tile-status) buffer modifiers. They can be combined with all of
* the color buffer tiling modifiers defined above. When TS is present it's a
* separate buffer containing the clear/compression status of each tile. The
* modifiers are defined as VIVANTE_MOD_TS_c_s, where c is the color buffer
* tile size in bytes covered by one entry in the status buffer and s is the
* number of status bits per entry.
* We reserve the top 8 bits of the Vivante modifier space for tile status
* clear/compression modifiers, as future cores might add some more TS layout
* variations.
*/
#define VIVANTE_MOD_TS_64_4 (1ULL << 48)
#define VIVANTE_MOD_TS_64_2 (2ULL << 48)
#define VIVANTE_MOD_TS_128_4 (3ULL << 48)
#define VIVANTE_MOD_TS_256_4 (4ULL << 48)
#define VIVANTE_MOD_TS_MASK (0xfULL << 48)
/*
* Vivante compression modifiers. Those depend on a TS modifier being present
* as the TS bits get reinterpreted as compression tags instead of simple
* clear markers when compression is enabled.
*/
#define VIVANTE_MOD_COMP_DEC400 (1ULL << 52)
#define VIVANTE_MOD_COMP_MASK (0xfULL << 52)
/* Masking out the extension bits will yield the base modifier. */
#define VIVANTE_MOD_EXT_MASK (VIVANTE_MOD_TS_MASK | \
VIVANTE_MOD_COMP_MASK)
/* NVIDIA frame buffer modifiers */
/*

18
include/standard-headers/linux/ethtool.h
View File

@ -159,8 +159,10 @@ static inline uint32_t ethtool_cmd_speed(const struct ethtool_cmd *ep)
* in its bus driver structure (e.g. pci_driver::name). Must
* not be an empty string.
* @version: Driver version string; may be an empty string
* @fw_version: Firmware version string; may be an empty string
* @erom_version: Expansion ROM version string; may be an empty string
* @fw_version: Firmware version string; driver defined; may be an
* empty string
* @erom_version: Expansion ROM version string; driver defined; may be
* an empty string
* @bus_info: Device bus address. This should match the dev_name()
* string for the underlying bus device, if there is one. May be
* an empty string.
@ -179,10 +181,6 @@ static inline uint32_t ethtool_cmd_speed(const struct ethtool_cmd *ep)
*
* Users can use the %ETHTOOL_GSSET_INFO command to get the number of
* strings in any string set (from Linux 2.6.34).
*
* Drivers should set at most @driver, @version, @fw_version and
* @bus_info in their get_drvinfo() implementation. The ethtool
* core fills in the other fields using other driver operations.
*/
struct ethtool_drvinfo {
uint32_t cmd;
@ -1737,6 +1735,13 @@ enum ethtool_link_mode_bit_indices {
ETHTOOL_LINK_MODE_100baseFX_Half_BIT = 90,
ETHTOOL_LINK_MODE_100baseFX_Full_BIT = 91,
ETHTOOL_LINK_MODE_10baseT1L_Full_BIT = 92,
ETHTOOL_LINK_MODE_800000baseCR8_Full_BIT = 93,
ETHTOOL_LINK_MODE_800000baseKR8_Full_BIT = 94,
ETHTOOL_LINK_MODE_800000baseDR8_Full_BIT = 95,
ETHTOOL_LINK_MODE_800000baseDR8_2_Full_BIT = 96,
ETHTOOL_LINK_MODE_800000baseSR8_Full_BIT = 97,
ETHTOOL_LINK_MODE_800000baseVR8_Full_BIT = 98,
/* must be last entry */
__ETHTOOL_LINK_MODE_MASK_NBITS
};
@ -1848,6 +1853,7 @@ enum ethtool_link_mode_bit_indices {
#define SPEED_100000 100000
#define SPEED_200000 200000
#define SPEED_400000 400000
#define SPEED_800000 800000
#define SPEED_UNKNOWN -1

16
include/standard-headers/linux/fuse.h
View File

@ -197,6 +197,10 @@
*
* 7.37
* - add FUSE_TMPFILE
*
* 7.38
* - add FUSE_EXPIRE_ONLY flag to fuse_notify_inval_entry
* - add FOPEN_PARALLEL_DIRECT_WRITES
*/
#ifndef _LINUX_FUSE_H
@ -228,7 +232,7 @@
#define FUSE_KERNEL_VERSION 7
/** Minor version number of this interface */
#define FUSE_KERNEL_MINOR_VERSION 37
#define FUSE_KERNEL_MINOR_VERSION 38
/** The node ID of the root inode */
#define FUSE_ROOT_ID 1
@ -300,6 +304,7 @@ struct fuse_file_lock {
* FOPEN_CACHE_DIR: allow caching this directory
* FOPEN_STREAM: the file is stream-like (no file position at all)
* FOPEN_NOFLUSH: don't flush data cache on close (unless FUSE_WRITEBACK_CACHE)
* FOPEN_PARALLEL_DIRECT_WRITES: Allow concurrent direct writes on the same inode
*/
#define FOPEN_DIRECT_IO (1 << 0)
#define FOPEN_KEEP_CACHE (1 << 1)
@ -307,6 +312,7 @@ struct fuse_file_lock {
#define FOPEN_CACHE_DIR (1 << 3)
#define FOPEN_STREAM (1 << 4)
#define FOPEN_NOFLUSH (1 << 5)
#define FOPEN_PARALLEL_DIRECT_WRITES (1 << 6)
/**
* INIT request/reply flags
@ -487,6 +493,12 @@ struct fuse_file_lock {
*/
#define FUSE_SETXATTR_ACL_KILL_SGID (1 << 0)
/**
* notify_inval_entry flags
* FUSE_EXPIRE_ONLY
*/
#define FUSE_EXPIRE_ONLY (1 << 0)
enum fuse_opcode {
FUSE_LOOKUP = 1,
FUSE_FORGET = 2, /* no reply */
@ -915,7 +927,7 @@ struct fuse_notify_inval_inode_out {
struct fuse_notify_inval_entry_out {
uint64_t parent;
uint32_t namelen;
uint32_t padding;
uint32_t flags;
};
struct fuse_notify_delete_out {

3
include/standard-headers/linux/input-event-codes.h
View File

@ -614,6 +614,9 @@
#define KEY_KBD_LAYOUT_NEXT 0x248 /* AC Next Keyboard Layout Select */
#define KEY_EMOJI_PICKER 0x249 /* Show/hide emoji picker (HUTRR101) */
#define KEY_DICTATE 0x24a /* Start or Stop Voice Dictation Session (HUTRR99) */
#define KEY_CAMERA_ACCESS_ENABLE 0x24b /* Enables programmatic access to camera devices. (HUTRR72) */
#define KEY_CAMERA_ACCESS_DISABLE 0x24c /* Disables programmatic access to camera devices. (HUTRR72) */
#define KEY_CAMERA_ACCESS_TOGGLE 0x24d /* Toggles the current state of the camera access control. (HUTRR72) */
#define KEY_BRIGHTNESS_MIN 0x250 /* Set Brightness to Minimum */
#define KEY_BRIGHTNESS_MAX 0x251 /* Set Brightness to Maximum */

2
include/standard-headers/linux/pci_regs.h
View File

@ -1058,6 +1058,7 @@
/* Precision Time Measurement */
#define PCI_PTM_CAP 0x04 /* PTM Capability */
#define PCI_PTM_CAP_REQ 0x00000001 /* Requester capable */
#define PCI_PTM_CAP_RES 0x00000002 /* Responder capable */
#define PCI_PTM_CAP_ROOT 0x00000004 /* Root capable */
#define PCI_PTM_GRANULARITY_MASK 0x0000FF00 /* Clock granularity */
#define PCI_PTM_CTRL 0x08 /* PTM Control */
@ -1119,6 +1120,7 @@
#define PCI_DOE_STATUS_DATA_OBJECT_READY 0x80000000 /* Data Object Ready */
#define PCI_DOE_WRITE 0x10 /* DOE Write Data Mailbox Register */
#define PCI_DOE_READ 0x14 /* DOE Read Data Mailbox Register */
#define PCI_DOE_CAP_SIZEOF 0x18 /* Size of DOE register block */
/* DOE Data Object - note not actually registers */
#define PCI_DOE_DATA_OBJECT_HEADER_1_VID 0x0000ffff

8
include/standard-headers/linux/virtio_bt.h
View File

@ -9,6 +9,7 @@
#define VIRTIO_BT_F_VND_HCI 0 /* Indicates vendor command support */
#define VIRTIO_BT_F_MSFT_EXT 1 /* Indicates MSFT vendor support */
#define VIRTIO_BT_F_AOSP_EXT 2 /* Indicates AOSP vendor support */
#define VIRTIO_BT_F_CONFIG_V2 3 /* Use second version configuration */
enum virtio_bt_config_type {
VIRTIO_BT_CONFIG_TYPE_PRIMARY = 0,
@ -28,4 +29,11 @@ struct virtio_bt_config {
uint16_t msft_opcode;
} QEMU_PACKED;
struct virtio_bt_config_v2 {
uint8_t type;
uint8_t alignment;
uint16_t vendor;
uint16_t msft_opcode;
};
#endif /* _LINUX_VIRTIO_BT_H */

4
include/standard-headers/linux/virtio_net.h
View File

@ -57,6 +57,9 @@
* Steering */
#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */
#define VIRTIO_NET_F_NOTF_COAL 53 /* Device supports notifications coalescing */
#define VIRTIO_NET_F_GUEST_USO4 54 /* Guest can handle USOv4 in. */
#define VIRTIO_NET_F_GUEST_USO6 55 /* Guest can handle USOv6 in. */
#define VIRTIO_NET_F_HOST_USO 56 /* Host can handle USO in. */
#define VIRTIO_NET_F_HASH_REPORT 57 /* Supports hash report */
#define VIRTIO_NET_F_RSS 60 /* Supports RSS RX steering */
#define VIRTIO_NET_F_RSC_EXT 61 /* extended coalescing info */
@ -130,6 +133,7 @@ struct virtio_net_hdr_v1 {
#define VIRTIO_NET_HDR_GSO_TCPV4 1 /* GSO frame, IPv4 TCP (TSO) */
#define VIRTIO_NET_HDR_GSO_UDP 3 /* GSO frame, IPv4 UDP (UFO) */
#define VIRTIO_NET_HDR_GSO_TCPV6 4 /* GSO frame, IPv6 TCP */
#define VIRTIO_NET_HDR_GSO_UDP_L4 5 /* GSO frame, IPv4& IPv6 UDP (USO) */
#define VIRTIO_NET_HDR_GSO_ECN 0x80 /* TCP has ECN set */
uint8_t gso_type;
__virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */

1
linux-headers/asm-arm64/kvm.h
View File

@ -43,6 +43,7 @@
#define __KVM_HAVE_VCPU_EVENTS
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
#define KVM_DIRTY_LOG_PAGE_OFFSET 64
#define KVM_REG_SIZE(id) \
(1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))

3
linux-headers/asm-riscv/kvm.h
View File

@ -49,6 +49,9 @@ struct kvm_sregs {
struct kvm_riscv_config {
unsigned long isa;
unsigned long zicbom_block_size;
unsigned long mvendorid;
unsigned long marchid;
unsigned long mimpid;
};
/* CORE registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */

11
linux-headers/asm-x86/kvm.h
View File

@ -53,14 +53,6 @@
/* Architectural interrupt line count. */
#define KVM_NR_INTERRUPTS 256
struct kvm_memory_alias {
__u32 slot; /* this has a different namespace than memory slots */
__u32 flags;
__u64 guest_phys_addr;
__u64 memory_size;
__u64 target_phys_addr;
};
/* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
struct kvm_pic_state {
__u8 last_irr; /* edge detection */
@ -214,6 +206,8 @@ struct kvm_msr_list {
struct kvm_msr_filter_range {
#define KVM_MSR_FILTER_READ (1 << 0)
#define KVM_MSR_FILTER_WRITE (1 << 1)
#define KVM_MSR_FILTER_RANGE_VALID_MASK (KVM_MSR_FILTER_READ | \
KVM_MSR_FILTER_WRITE)
__u32 flags;
__u32 nmsrs; /* number of msrs in bitmap */
__u32 base; /* MSR index the bitmap starts at */
@ -224,6 +218,7 @@ struct kvm_msr_filter_range {
struct kvm_msr_filter {
#define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0)
#define KVM_MSR_FILTER_DEFAULT_DENY (1 << 0)
#define KVM_MSR_FILTER_VALID_MASK (KVM_MSR_FILTER_DEFAULT_DENY)
__u32 flags;
struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES];
};

34
linux-headers/linux/kvm.h
View File

@ -86,14 +86,6 @@ struct kvm_debug_guest {
/* *** End of deprecated interfaces *** */
/* for KVM_CREATE_MEMORY_REGION */
struct kvm_memory_region {
__u32 slot;
__u32 flags;
__u64 guest_phys_addr;
__u64 memory_size; /* bytes */
};
/* for KVM_SET_USER_MEMORY_REGION */
struct kvm_userspace_memory_region {
__u32 slot;
@ -104,9 +96,9 @@ struct kvm_userspace_memory_region {
};
/*
* The bit 0 ~ bit 15 of kvm_memory_region::flags are visible for userspace,
* other bits are reserved for kvm internal use which are defined in
* include/linux/kvm_host.h.
* The bit 0 ~ bit 15 of kvm_userspace_memory_region::flags are visible for
* userspace, other bits are reserved for kvm internal use which are defined
* in include/linux/kvm_host.h.
*/
#define KVM_MEM_LOG_DIRTY_PAGES (1UL << 0)
#define KVM_MEM_READONLY (1UL << 1)
@ -483,6 +475,9 @@ struct kvm_run {
#define KVM_MSR_EXIT_REASON_INVAL (1 << 0)
#define KVM_MSR_EXIT_REASON_UNKNOWN (1 << 1)
#define KVM_MSR_EXIT_REASON_FILTER (1 << 2)
#define KVM_MSR_EXIT_REASON_VALID_MASK (KVM_MSR_EXIT_REASON_INVAL | \
KVM_MSR_EXIT_REASON_UNKNOWN | \
KVM_MSR_EXIT_REASON_FILTER)
__u32 reason; /* kernel -> user */
__u32 index; /* kernel -> user */
__u64 data; /* kernel <-> user */
@ -1176,6 +1171,8 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_S390_ZPCI_OP 221
#define KVM_CAP_S390_CPU_TOPOLOGY 222
#define KVM_CAP_DIRTY_LOG_RING_ACQ_REL 223
#define KVM_CAP_S390_PROTECTED_ASYNC_DISABLE 224
#define KVM_CAP_DIRTY_LOG_RING_WITH_BITMAP 225
#ifdef KVM_CAP_IRQ_ROUTING
@ -1265,6 +1262,7 @@ struct kvm_x86_mce {
#define KVM_XEN_HVM_CONFIG_RUNSTATE (1 << 3)
#define KVM_XEN_HVM_CONFIG_EVTCHN_2LEVEL (1 << 4)
#define KVM_XEN_HVM_CONFIG_EVTCHN_SEND (1 << 5)
#define KVM_XEN_HVM_CONFIG_RUNSTATE_UPDATE_FLAG (1 << 6)
struct kvm_xen_hvm_config {
__u32 flags;
@ -1435,18 +1433,12 @@ struct kvm_vfio_spapr_tce {
__s32 tablefd;
};
/*
* ioctls for VM fds
*/
#define KVM_SET_MEMORY_REGION _IOW(KVMIO, 0x40, struct kvm_memory_region)
/*
* KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
* a vcpu fd.
*/
#define KVM_CREATE_VCPU _IO(KVMIO, 0x41)
#define KVM_GET_DIRTY_LOG _IOW(KVMIO, 0x42, struct kvm_dirty_log)
/* KVM_SET_MEMORY_ALIAS is obsolete: */
#define KVM_SET_MEMORY_ALIAS _IOW(KVMIO, 0x43, struct kvm_memory_alias)
#define KVM_SET_NR_MMU_PAGES _IO(KVMIO, 0x44)
#define KVM_GET_NR_MMU_PAGES _IO(KVMIO, 0x45)
#define KVM_SET_USER_MEMORY_REGION _IOW(KVMIO, 0x46, \
@ -1738,6 +1730,8 @@ enum pv_cmd_id {
KVM_PV_UNSHARE_ALL,
KVM_PV_INFO,
KVM_PV_DUMP,
KVM_PV_ASYNC_CLEANUP_PREPARE,
KVM_PV_ASYNC_CLEANUP_PERFORM,
};
struct kvm_pv_cmd {
@ -1768,8 +1762,10 @@ struct kvm_xen_hvm_attr {
union {
__u8 long_mode;
__u8 vector;
__u8 runstate_update_flag;
struct {
__u64 gfn;
#define KVM_XEN_INVALID_GFN ((__u64)-1)
} shared_info;
struct {
__u32 send_port;
@ -1801,6 +1797,7 @@ struct kvm_xen_hvm_attr {
} u;
};
/* Available with KVM_CAP_XEN_HVM / KVM_XEN_HVM_CONFIG_SHARED_INFO */
#define KVM_XEN_ATTR_TYPE_LONG_MODE 0x0
#define KVM_XEN_ATTR_TYPE_SHARED_INFO 0x1
@ -1808,6 +1805,8 @@ struct kvm_xen_hvm_attr {
/* Available with KVM_CAP_XEN_HVM / KVM_XEN_HVM_CONFIG_EVTCHN_SEND */
#define KVM_XEN_ATTR_TYPE_EVTCHN 0x3
#define KVM_XEN_ATTR_TYPE_XEN_VERSION 0x4
/* Available with KVM_CAP_XEN_HVM / KVM_XEN_HVM_CONFIG_RUNSTATE_UPDATE_FLAG */
#define KVM_XEN_ATTR_TYPE_RUNSTATE_UPDATE_FLAG 0x5
/* Per-vCPU Xen attributes */
#define KVM_XEN_VCPU_GET_ATTR _IOWR(KVMIO, 0xca, struct kvm_xen_vcpu_attr)
@ -1824,6 +1823,7 @@ struct kvm_xen_vcpu_attr {
__u16 pad[3];
union {
__u64 gpa;
#define KVM_XEN_INVALID_GPA ((__u64)-1)
__u64 pad[8];
struct {
__u64 state;

4
linux-headers/linux/psci.h
View File

@ -58,7 +58,7 @@
#define PSCI_1_1_FN_SYSTEM_RESET2 PSCI_0_2_FN(18)
#define PSCI_1_1_FN_MEM_PROTECT PSCI_0_2_FN(19)
#define PSCI_1_1_FN_MEM_PROTECT_CHECK_RANGE PSCI_0_2_FN(19)
#define PSCI_1_1_FN_MEM_PROTECT_CHECK_RANGE PSCI_0_2_FN(20)
#define PSCI_1_0_FN64_CPU_DEFAULT_SUSPEND PSCI_0_2_FN64(12)
#define PSCI_1_0_FN64_NODE_HW_STATE PSCI_0_2_FN64(13)
@ -67,7 +67,7 @@
#define PSCI_1_0_FN64_STAT_COUNT PSCI_0_2_FN64(17)
#define PSCI_1_1_FN64_SYSTEM_RESET2 PSCI_0_2_FN64(18)
#define PSCI_1_1_FN64_MEM_PROTECT_CHECK_RANGE PSCI_0_2_FN64(19)
#define PSCI_1_1_FN64_MEM_PROTECT_CHECK_RANGE PSCI_0_2_FN64(20)
/* PSCI v0.2 power state encoding for CPU_SUSPEND function */
#define PSCI_0_2_POWER_STATE_ID_MASK 0xffff

138
linux-headers/linux/vfio.h
View File

@ -819,12 +819,20 @@ struct vfio_device_feature {
* VFIO_MIGRATION_STOP_COPY | VFIO_MIGRATION_P2P means that RUNNING_P2P
* is supported in addition to the STOP_COPY states.
*
* VFIO_MIGRATION_STOP_COPY | VFIO_MIGRATION_PRE_COPY means that
* PRE_COPY is supported in addition to the STOP_COPY states.
*
* VFIO_MIGRATION_STOP_COPY | VFIO_MIGRATION_P2P | VFIO_MIGRATION_PRE_COPY
* means that RUNNING_P2P, PRE_COPY and PRE_COPY_P2P are supported
* in addition to the STOP_COPY states.
*
* Other combinations of flags have behavior to be defined in the future.
*/
struct vfio_device_feature_migration {
__aligned_u64 flags;
#define VFIO_MIGRATION_STOP_COPY (1 << 0)
#define VFIO_MIGRATION_P2P (1 << 1)
#define VFIO_MIGRATION_PRE_COPY (1 << 2)
};
#define VFIO_DEVICE_FEATURE_MIGRATION 1
@ -875,8 +883,13 @@ struct vfio_device_feature_mig_state {
* RESUMING - The device is stopped and is loading a new internal state
* ERROR - The device has failed and must be reset
*
* And 1 optional state to support VFIO_MIGRATION_P2P:
* And optional states to support VFIO_MIGRATION_P2P:
* RUNNING_P2P - RUNNING, except the device cannot do peer to peer DMA
* And VFIO_MIGRATION_PRE_COPY:
* PRE_COPY - The device is running normally but tracking internal state
* changes
* And VFIO_MIGRATION_P2P | VFIO_MIGRATION_PRE_COPY:
* PRE_COPY_P2P - PRE_COPY, except the device cannot do peer to peer DMA
*
* The FSM takes actions on the arcs between FSM states. The driver implements
* the following behavior for the FSM arcs:
@ -908,20 +921,48 @@ struct vfio_device_feature_mig_state {
*
* To abort a RESUMING session the device must be reset.
*
* PRE_COPY -> RUNNING
* RUNNING_P2P -> RUNNING
* While in RUNNING the device is fully operational, the device may generate
* interrupts, DMA, respond to MMIO, all vfio device regions are functional,
* and the device may advance its internal state.
*
* The PRE_COPY arc will terminate a data transfer session.
*
* PRE_COPY_P2P -> RUNNING_P2P
* RUNNING -> RUNNING_P2P
* STOP -> RUNNING_P2P
* While in RUNNING_P2P the device is partially running in the P2P quiescent
* state defined below.
*
* STOP -> STOP_COPY
* This arc begin the process of saving the device state and will return a
* new data_fd.
* The PRE_COPY_P2P arc will terminate a data transfer session.
*
* RUNNING -> PRE_COPY
* RUNNING_P2P -> PRE_COPY_P2P
* STOP -> STOP_COPY
* PRE_COPY, PRE_COPY_P2P and STOP_COPY form the "saving group" of states
* which share a data transfer session. Moving between these states alters
* what is streamed in session, but does not terminate or otherwise affect
* the associated fd.
*
* These arcs begin the process of saving the device state and will return a
* new data_fd. The migration driver may perform actions such as enabling
* dirty logging of device state when entering PRE_COPY or PER_COPY_P2P.
*
* Each arc does not change the device operation, the device remains
* RUNNING, P2P quiesced or in STOP. The STOP_COPY state is described below
* in PRE_COPY_P2P -> STOP_COPY.
*
* PRE_COPY -> PRE_COPY_P2P
* Entering PRE_COPY_P2P continues all the behaviors of PRE_COPY above.
* However, while in the PRE_COPY_P2P state, the device is partially running
* in the P2P quiescent state defined below, like RUNNING_P2P.
*
* PRE_COPY_P2P -> PRE_COPY
* This arc allows returning the device to a full RUNNING behavior while
* continuing all the behaviors of PRE_COPY.
*
* PRE_COPY_P2P -> STOP_COPY
* While in the STOP_COPY state the device has the same behavior as STOP
* with the addition that the data transfers session continues to stream the
* migration state. End of stream on the FD indicates the entire device
@ -939,6 +980,13 @@ struct vfio_device_feature_mig_state {
* device state for this arc if required to prepare the device to receive the
* migration data.
*
* STOP_COPY -> PRE_COPY
* STOP_COPY -> PRE_COPY_P2P
* These arcs are not permitted and return error if requested. Future
* revisions of this API may define behaviors for these arcs, in this case
* support will be discoverable by a new flag in
* VFIO_DEVICE_FEATURE_MIGRATION.
*
* any -> ERROR
* ERROR cannot be specified as a device state, however any transition request
* can be failed with an errno return and may then move the device_state into
@ -950,7 +998,7 @@ struct vfio_device_feature_mig_state {
* The optional peer to peer (P2P) quiescent state is intended to be a quiescent
* state for the device for the purposes of managing multiple devices within a
* user context where peer-to-peer DMA between devices may be active. The
* RUNNING_P2P states must prevent the device from initiating
* RUNNING_P2P and PRE_COPY_P2P states must prevent the device from initiating
* any new P2P DMA transactions. If the device can identify P2P transactions
* then it can stop only P2P DMA, otherwise it must stop all DMA. The migration
* driver must complete any such outstanding operations prior to completing the
@ -963,6 +1011,8 @@ struct vfio_device_feature_mig_state {
* above FSM arcs. As there are multiple paths through the FSM arcs the path
* should be selected based on the following rules:
* - Select the shortest path.
* - The path cannot have saving group states as interior arcs, only
* starting/end states.
* Refer to vfio_mig_get_next_state() for the result of the algorithm.
*
* The automatic transit through the FSM arcs that make up the combination
@ -976,6 +1026,9 @@ struct vfio_device_feature_mig_state {
* support them. The user can discover if these states are supported by using
* VFIO_DEVICE_FEATURE_MIGRATION. By using combination transitions the user can
* avoid knowing about these optional states if the kernel driver supports them.
*
* Arcs touching PRE_COPY and PRE_COPY_P2P are removed if support for PRE_COPY
* is not present.
*/
enum vfio_device_mig_state {
VFIO_DEVICE_STATE_ERROR = 0,
@ -984,8 +1037,70 @@ enum vfio_device_mig_state {
VFIO_DEVICE_STATE_STOP_COPY = 3,
VFIO_DEVICE_STATE_RESUMING = 4,
VFIO_DEVICE_STATE_RUNNING_P2P = 5,
VFIO_DEVICE_STATE_PRE_COPY = 6,
VFIO_DEVICE_STATE_PRE_COPY_P2P = 7,
};
/**
* VFIO_MIG_GET_PRECOPY_INFO - _IO(VFIO_TYPE, VFIO_BASE + 21)
*
* This ioctl is used on the migration data FD in the precopy phase of the
* migration data transfer. It returns an estimate of the current data sizes
* remaining to be transferred. It allows the user to judge when it is
* appropriate to leave PRE_COPY for STOP_COPY.
*
* This ioctl is valid only in PRE_COPY states and kernel driver should
* return -EINVAL from any other migration state.
*
* The vfio_precopy_info data structure returned by this ioctl provides
* estimates of data available from the device during the PRE_COPY states.
* This estimate is split into two categories, initial_bytes and
* dirty_bytes.
*
* The initial_bytes field indicates the amount of initial precopy
* data available from the device. This field should have a non-zero initial
* value and decrease as migration data is read from the device.
* It is recommended to leave PRE_COPY for STOP_COPY only after this field
* reaches zero. Leaving PRE_COPY earlier might make things slower.
*
* The dirty_bytes field tracks device state changes relative to data
* previously retrieved. This field starts at zero and may increase as
* the internal device state is modified or decrease as that modified
* state is read from the device.
*
* Userspace may use the combination of these fields to estimate the
* potential data size available during the PRE_COPY phases, as well as
* trends relative to the rate the device is dirtying its internal
* state, but these fields are not required to have any bearing relative
* to the data size available during the STOP_COPY phase.
*
* Drivers have a lot of flexibility in when and what they transfer during the
* PRE_COPY phase, and how they report this from VFIO_MIG_GET_PRECOPY_INFO.
*
* During pre-copy the migration data FD has a temporary "end of stream" that is
* reached when both initial_bytes and dirty_byte are zero. For instance, this
* may indicate that the device is idle and not currently dirtying any internal
* state. When read() is done on this temporary end of stream the kernel driver
* should return ENOMSG from read(). Userspace can wait for more data (which may
* never come) by using poll.
*
* Once in STOP_COPY the migration data FD has a permanent end of stream
* signaled in the usual way by read() always returning 0 and poll always
* returning readable. ENOMSG may not be returned in STOP_COPY.
* Support for this ioctl is mandatory if a driver claims to support
* VFIO_MIGRATION_PRE_COPY.
*
* Return: 0 on success, -1 and errno set on failure.
*/
struct vfio_precopy_info {
__u32 argsz;
__u32 flags;
__aligned_u64 initial_bytes;
__aligned_u64 dirty_bytes;
};
#define VFIO_MIG_GET_PRECOPY_INFO _IO(VFIO_TYPE, VFIO_BASE + 21)
/*
* Upon VFIO_DEVICE_FEATURE_SET, allow the device to be moved into a low power
* state with the platform-based power management. Device use of lower power
@ -1128,6 +1243,19 @@ struct vfio_device_feature_dma_logging_report {
#define VFIO_DEVICE_FEATURE_DMA_LOGGING_REPORT 8
/*
* Upon VFIO_DEVICE_FEATURE_GET read back the estimated data length that will
* be required to complete stop copy.
*
* Note: Can be called on each device state.
*/
struct vfio_device_feature_mig_data_size {
__aligned_u64 stop_copy_length;
};
#define VFIO_DEVICE_FEATURE_MIG_DATA_SIZE 9
/* -------- API for Type1 VFIO IOMMU -------- */
/**